How do I set my main screen?

At the top of my main screen the big number is telling me my altitude. How do I change that to either distance, or time?? It gives me 10 readings overall, and 3 of them are altitude, and one is max altitude. How do I change, or set up, this screen?? Thanks!

Please do long click on that indicator to change it to something else.

Thanks!!! That got it. I was pressing it, but pressing long enough…